Add method to determine a file type

ProjectLighthouse.Tests/ExampleFiles/TestFarc.farc

@@ -0,0 +1 @@
+FSHbFARC

ProjectLighthouse.Tests/ExampleFiles/TestScript.ff

@@ -0,0 +1,3 @@
+FSH
+
+this is not my stuff to upload so its just gonna be a file like this for now :/

ProjectLighthouse.Tests/ProjectLighthouse.Tests.csproj

@@ -23,7 +23,9 @@
     </ItemGroup>
 
     <ItemGroup>
-      <ProjectReference Include="..\ProjectLighthouse\ProjectLighthouse.csproj" />
+        <ProjectReference Include="..\ProjectLighthouse\ProjectLighthouse.csproj" />
+        <Content Include="ExampleFiles\**">
+            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        </Content>
     </ItemGroup>
-
 </Project>

ProjectLighthouse.Tests/Tests/FileTypeTests.cs

@@ -0,0 +1,53 @@
+using System;
+using System.IO;
+using System.Net;
+using System.Text;
+using ProjectLighthouse.Types.Files;
+using Xunit;
+
+namespace ProjectLighthouse.Tests {
+    public class FileTypeTests {
+        [Fact]
+        public void ShouldRecognizeLevel() {
+            LbpFile file = new(File.ReadAllBytes("ExampleFiles/TestLevel.lvl"));
+            Assert.True(file.FileType == LbpFileType.Level);
+        }
+
+        [Fact]
+        public void ShouldRecognizeScript() {
+            LbpFile file = new(File.ReadAllBytes("ExampleFiles/TestScript.ff"));
+            Assert.True(file.FileType == LbpFileType.Script);
+        }
+
+        [Fact]
+        public void ShouldRecognizeTexture() {
+            LbpFile file = new(File.ReadAllBytes("ExampleFiles/TestTexture.tex"));
+            Assert.True(file.FileType == LbpFileType.Texture);
+        }
+
+        [Fact]
+        public void ShouldRecognizeFileArchive() {
+            LbpFile file = new(File.ReadAllBytes("ExampleFiles/TestFarc.farc"));
+            Assert.True(file.FileType == LbpFileType.FileArchive);
+        }
+
+        [Fact]
+        public void ShouldNotRecognizeFileArchiveAsScript() {
+            LbpFile file = new(File.ReadAllBytes("ExampleFiles/TestFarc.farc"));
+            Assert.False(file.FileType == LbpFileType.Script);
+            Assert.True(file.FileType == LbpFileType.FileArchive);
+        }
+
+        [Fact]
+        public void ShouldRecognizeNothingAsUnknown() {
+            LbpFile file = new(Array.Empty<byte>());
+            Assert.True(file.FileType == LbpFileType.Unknown);
+        }
+
+        [Fact]
+        public void ShouldRecognizeGarbageAsUnknown() {
+            LbpFile file = new(Encoding.ASCII.GetBytes("free pc only $900"));
+            Assert.True(file.FileType == LbpFileType.Unknown);
+        }
+    }
+}